APA   Click to copy
Niepel, C., Stadler, M., & Greiff, S. (2019). Seeing is believing. Gender diversity in science, technology, engineering, and mathematics predicts students’ mathematics self-concept across 23 countries. Journal of Educational Psychology, 111, 1119–1130. https://doi.org/10.1037/edu0000340

Chicago/Turabian   Click to copy
Niepel, C., M. Stadler, and S. Greiff. “Seeing Is Believing. Gender Diversity in Science, Technology, Engineering, and Mathematics Predicts Students’ Mathematics Self-Concept across 23 Countries.” Journal of Educational Psychology 111 (2019): 1119–1130.

MLA   Click to copy
Niepel, C., et al. “Seeing Is Believing. Gender Diversity in Science, Technology, Engineering, and Mathematics Predicts Students’ Mathematics Self-Concept across 23 Countries.” Journal of Educational Psychology, vol. 111, 2019, pp. 1119–30, doi:10.1037/edu0000340.

@article{niepel2019a,
  title = {Seeing is believing. Gender diversity in science, technology, engineering, and mathematics predicts students’ mathematics self-concept across 23 countries},
  year = {2019},
  journal = {Journal of Educational Psychology},
  pages = {1119-1130},
  volume = {111},
  doi = {10.1037/edu0000340},
  author = {Niepel, C. and Stadler, M. and Greiff, S.}
}